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United States Patent | 5,251,340 |
Su-Land | October 12, 1993 |
This invention provides a flush toilet with an automatic sterilizing device, which can discharge a small volume of flush water first upon sensing a user having used it, and then discharge a large volume with a given volume of sterilizing liquid so as to wash away any urine sediment in a urinal completely. The device comprises a control circuit to control a solenoid valve for controlling a given volume of flush water, and to control a sterilizing unit; the sterilizing unit includes a sterilizing liquid container which is controlled with a liquid pump to discharge liquid. The liquid pump is controlled with the control circuit. During the large volume discharge of water the liquid pump can pump and discharge a suitable volume of sterilizing liquid to mix with the flush water to wash and sterilize a urinal simultaneously.
Inventors: | Su-Land; Liao (Room 2, 5th Fl., No. 13, Lane 198, Chung-Hsing Rd., Fung-Yuan City, Tai-Chung Hsian, Taipei, TW) |
Appl. No.: | 848288 |
Filed: | March 9, 1992 |
Current U.S. Class: | 4/304; 4/226.1; 4/309 |
Intern'l Class: | E03D 009/02 |
Field of Search: | 4/302,304,305,309,313,222,226.1,224 |
1240831 | Sep., 1917 | Doering, Jr. | 4/309. |
3001210 | Sep., 1961 | Diehl | 4/309. |
3314081 | Apr., 1967 | Atkins et al. | 4/304. |
3358299 | Dec., 1967 | Maude | 4/226. |
3445865 | May., 1969 | Rumsey, Jr. | 4/309. |
3593073 | Jul., 1971 | Atkins | 4/304. |
3639920 | Feb., 1972 | Griffin et al. | 4/304. |
3648298 | Mar., 1972 | Gross | 4/309. |
4805247 | Feb., 1989 | Laverty, Jr. | 4/304. |
5031258 | Jul., 1991 | Shaw | 4/304. |
5062453 | Nov., 1991 | Saadi et al. | 4/304. |
Foreign Patent Documents | |||
4338825 | Oct., 1989 | EP | 4/226. |
3003591 | Aug., 1981 | DE | 4/224. |
3615655 | Nov., 1987 | DE | 4/226. |
0247620 | Oct., 1989 | JP | 4/302. |
0194219 | Jul., 1990 | JP | 4/224. |
4007426 | Jan., 1992 | JP | 4/304. |
0673129 | Feb., 1990 | CH | 4/313. |